Mount Veeder Road MPM 5.25 and 5.43 Slide Repair Project
1 Documents in Project
Summary
SCH Number
2026060253
Public Agency
Napa County
Document Title
Mount Veeder Road MPM 5.25 and 5.43 Slide Repair Project
Document Type
NOE - Notice of Exemption
Received
Posted
6/5/2026
Document Description
Mount Veeder Road near mile post marker (MPM) 4.3 sustained roadway failure when a portion of the road slid down the hillside, threatening the remaining portions of the road. To ensure the future stability of the road and provide for public safety, the County of Napa (County) is proposing to repair the damage by restoring the road and installing a retaining wall. The slide repair will include installing a retaining wall and restoring the damaged section of Mt. Veeder Road. The retaining wall will be a 14-foot-high, 184-foot-long concrete wall supported on drilled piers with tiebacks to allow for the travel lane to remain open during construction and provide additional lateral
support to reduce drilled pier depths. A shotcrete facing will also be applied as part of the shoring system during construction to stabilize the excavation and maintain one open lane. To ensure the high wall will adequately carry the load, one row of permanent tiebacks will be installed 6 feet below ground. To restore the asphalt surface and pre-slide drainage patterns at the roadway surface, backfill will be added and the roadway will be repaved. Best Management Practices and erosion control will
be implemented, as well as environmental commitments to protect environmental resources, including any potential special-status species or cultural resources that may occur in the project area.
PROJECT NUMBER: RDS26-24
Contact Information
Name
Dana Eleanor Morrison
Agency Name
County of Napa
Job Title
Supervising Planner - Conservation
Contact Types
Lead/Public Agency
Phone
Name
Dewey Phan
Agency Name
Napa County Public Works Department
Job Title
Assistant Engineer
Contact Types
Project Applicant / Parties Undertaking Project
Phone
Location
Coordinates
Cities
Napa, unincorporated area
Counties
Napa
Regions
Northern California, Unincorporated
Cross Streets
Mount Veeder Road and Mount Veeder School Road
Zip
94558
Total Acres
1
Jobs
1
Parcel #
034-320-016 and 034-320-012
State Highways
None
Railways
None
Airports
None
Schools
None
Waterways
Segassia Creek, Wing Canyon Creek, Dry Creek, Pickle Creek, Hopper Creek, and Redwood Creek
Township
06N
Range
05W
Section
16
Base
MDM
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15301 Class 1-Existing Facilities and Section 15302 Class 2 - Replacement or Reconstruction
Reasons for Exemption
Pursuant to CEQA Section 15300, the proposed project would be considered
Categorically Exempt based on at least one Exemption Class. The project site is not recognized as an important wildlife corridor by any regional or state agency or jurisdiction and is not considered critical to the ecological functioning of adjoining open space areas. However, the project site likely supports local movement patterns of terrestrial wildlife species and provides food and cover resources for common avian
and amphibian species. Temporary effects due to noise and increased human activity during project activities would not interfere with these local movement patterns over time or affect the ability of these species to forage or reproduce, various BMPs including biological monitoring, awareness training and protocol level surveys have been included as part of the project. The project site is not listed on any hazardous waste sites enumerated under Government Code Section 65962.5. As a result, there is no reasonable possibility that the project will have a significant effect on the environment.
The proposed improvements would be considered Categorically Exempt from CEQA pursuant to Section 15301 Class I-Existing Facilities, which includes the operation and repair of existing public or private structures or facilities involving negligible or no expansion of existing of former use. The proposed improvements would also be considered Categorically Exempt pursuant to Section 15302, Class 2-Replacement or Reconstruction, which consists of replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced. A key consideration in the appropriateness of using these Categorical Exemptions is whether the project would be located on the same site have substantially the same purpose and involves negligible or no expansion of an existing use. In terms of negligible expansion, the proposed project will generally take place within the existing facility's footprint and does not include significant expansions beyond existing conditions. The proposed project would restore the travel lane width and legal load capacity of the existing facility to improve public safety and would bring
the facility into compliance with current Road and Street Standards. Therefore, it has been determined that the proposed project qualifies for a Class 1 and Class 2 Categorical Exemption and has no reasonable possibility of having a significant effect on the environment.
County Clerk
Napa
Attachments
Notice of Exemption
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